/*
 * Copyright (c) 2025 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef HMFS_SUPER_BLOCK_WRITER_H
#define HMFS_SUPER_BLOCK_WRITER_H

#include <string>
#include <sys/types.h>
#include <memory>

#include "config.h"
#include "area_formater.h"
#include "hmfs_data.h"
#include "hmfs_command.h"

namespace OHOS {
namespace Hmfs {

union SuperBlockOnDisk {
    struct {
        uint8_t empty[HMFS_SUPER_BLOCK_OFFSET];
        struct SuperBlockData superBlock;
    };
    uint8_t size[HMFS_BLOCK_SIZE];
};

class HmfsMkfs;
class SuperBlockWriter : public HmfsDataAreaFormater {
public:
    SuperBlockWriter(HmfsMkfs* mkfs);
    ~SuperBlockWriter() = default;

    int32_t Prepare();
    int32_t Write();

private:
    friend class HmfsMkfs;

    int32_t InitBasicInfo();
    int32_t ClacCheckSum();
    int32_t FillSuperBlockData();
    void FillExtList();
    bool IsExtensionDuplicate(std::string& ext);
    int32_t UpdateHmfsData();

    HmfsMkfs* mkfs_;
    std::unique_ptr<SuperBlockOnDisk> superBlock_;
};

} // namespace Hmfs
} // namespace OHOS
#endif
